package cn.newtouch.entity.account;

import java.util.List;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.OrderBy;
import javax.persistence.Table;
import javax.persistence.Transient;

import org.apache.commons.lang.builder.ToStringBuilder;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.Fetch;
import org.hibernate.annotations.FetchMode;

import cn.newtouch.entity.IdEntity;
import cn.newtouch.util.utils.reflection.ConvertUtils;

import com.google.common.collect.Lists;

/**
 * 用户.
 * 
 * 使用JPA annotation定义ORM关系. 使用Hibernate annotation定义JPA 1.0未覆盖的部分.
 * 
 * @author calvin
 */
@Entity
// 表名与类名不相同时重新定义表名.
@Table(name = "ACCT_USER")
// 默认的缓存策略.
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class User extends IdEntity
{

    private String     loginName;

    private String     password;                       // 为简化演示使用明文保存的密码

    private String     name;

    private String     email;

    private List<Role> roleList = Lists.newArrayList(); // 有序的关联对象集合

    // 字段非空且唯一, 用于提醒Entity使用者及生成DDL.
    @Column(nullable = false, unique = true)
    public String getLoginName()
    {
        return this.loginName;
    }

    public void setLoginName(String loginName)
    {
        this.loginName = loginName;
    }

    public String getPassword()
    {
        return this.password;
    }

    public void setPassword(String password)
    {
        this.password = password;
    }

    public String getName()
    {
        return this.name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public String getEmail()
    {
        return this.email;
    }

    public void setEmail(String email)
    {
        this.email = email;
    }

    // 多对多定义
    @ManyToMany
    // 中间表定义,表名采用默认命名规则
    @JoinTable(name = "ACCT_USER_ROLE", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID") })
    // Fecth策略定义
    @Fetch(FetchMode.SUBSELECT)
    // 集合按id排序.
    @OrderBy("id")
    // 集合中对象id的缓存.
    @Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
    public List<Role> getRoleList()
    {
        return this.roleList;
    }

    public void setRoleList(List<Role> roleList)
    {
        this.roleList = roleList;
    }

    /**
     * 用户拥有的角色名称字符串, 多个角色名称用','分隔.
     */
    // 非持久化属性.
    @Transient
    public String getRoleNames()
    {
        return ConvertUtils.convertElementPropertyToString(this.roleList,
                "name", ", ");
    }

    /**
     * 用户拥有的角色id字符串, 多个角色id用','分隔.
     */
    // 非持久化属性.
    @Transient
    @SuppressWarnings("unchecked")
    public List<Long> getRoleIds()
    {
        return ConvertUtils.convertElementPropertyToList(this.roleList, "id");
    }

    @Override
    public String toString()
    {
        return ToStringBuilder.reflectionToString(this);
    }
}